TiO_(2)/生物炭复合材料光催化降解四环素与光解水制氢  

Photocatalytic Degradation of Tetracycline and Photolysis of Water for Hydrogen Production by TiO_(2)/Biochar Composite

作　　者：安明泽 薛斌[1,2,3] 杨照 张兵兵[1,2,3] 王盛 陈蔚洁 丁晓艳 娄金分 徐国敏 黄安荣[1,2,3] 孙静 An Mingze;Xue Bin;Yang Zhao;Zhang Bingbing;Wang Sheng;Chen Weijie;Ding Xiaoyan;Lou Jinfen;Xu Guomin;Huang Anrong;Sun Jing(National Engineering Research Center for Compounding and Modification of Polymer Materials,Guiyang 550014;Guizhou Material Industrial Technology Institute,Guiyang 550014;Guizhou Material Technology Innovation Base,Guiyang 550014,China)

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [2]贵州省材料产业技术研究院,贵州贵阳550014 [3]贵州省材料技术创新基地,贵州贵阳550014

出　　处：《广东化工》2022年第8期4-9,共6页Guangdong Chemical Industry

基　　金：贵州省科技支撑计划项目[2020]4Y025,[2019]2836,[2019]2856,[2020]1Y183,K[2021]253,[2021]113;贵阳市白云区科技计划项目[2019]17。

摘　　要：以玉米秸秆生物炭为载体,采用溶胶–凝胶法结合真空浸渍法制备TiO_(2)/生物炭复合材料(TiO_(2)/BC)。使用FT–IR、XRD、XPS、SEM、EDS、UV–Vis/DRS和N2吸附–脱附等分析方法对其晶型结构、化学组成、微观形貌以及表面物理化学性能进行表征。结果表明,TiO_(2)/生物炭复合材料整体呈现出凹凸不平的沟壑形貌,沟壑贯穿于整个材料中,类似于天然形成的“珊瑚礁”。以四环素(TC)溶液为模型分子,考察了模拟日光和可见光照射下TiO_(2)/BC复合材料的光催化活性。同时,光解水制氢实验表明,TiO_(2)/BC表现出优异的光解水制氢活性,并具有良好的循环稳定性。通过研究TiO_(2)/BC复合材料中的活性物质,推测了TiO_(2)/BC复合材料可能的光催化机理。Using corn straw biochar as the carrier, TiO_(2)/biochar composite(TiO_(2)/BC) was prepared by sol–gel method combined with vacuum impregnation method. The crystal structure, chemical composition, microscopic morphology, and surface physicochemical properties were characterized by FT–IR, XRD, XPS,SEM, EDS, UV-Vis/DRS, and N;adsorption–desorption analysis. The results show that the TiO_(2)/BC composite presents an uneven gully morphology, and the gully runs through the whole material, similar to the “coral reef” formed naturally. Using tetracycline(TC) solution as model molecule, the photocatalytic activity of TiO_(2)/BC composite under simulated sunlight and visible light irradiation were investigated. Meanwhile, the photolysis of water for hydrogen production experiments showed that TiO_(2)/BC exhibited excellent photolysis of water for hydrogen production activity, and good cycle stability. The possible photocatalytic mechanism of TiO_(2)/BC composite was speculated by studying the active species in TiO_(2)/BC composite.

关 键 词：TiO_(2)/BC 玉米秸秆生物炭 光催化 四环素 光解水制氢 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[环境科学与工程—环境工程] X703